I was chatting to someone and they said that Spain as a country should be prosecuted because the age of consent is 12. While I am not sure I agree with it being that low, I don't think there should be an international law on this issue.
The good thing is though, the age of consent covers gay and straight. Whether the age is 12 or 20 it should be the same. They obviously do some things better than in the UK.
It is interesting though that what/who you class as a child varies so much the world over.